1/* 2 * Copyright 2010 The Android Open Source Project 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 9#include "SkPDFFormXObject.h" 10#include "SkPDFUtils.h" 11 12sk_sp<SkPDFObject> SkPDFMakeFormXObject(std::unique_ptr<SkStreamAsset> content, 13 sk_sp<SkPDFArray> mediaBox, 14 sk_sp<SkPDFDict> resourceDict, 15 const SkMatrix& inverseTransform, 16 const char* colorSpace) { 17 auto form = sk_make_sp<SkPDFStream>(std::move(content)); 18 form->dict()->insertName("Type", "XObject"); 19 form->dict()->insertName("Subtype", "Form"); 20 if (!inverseTransform.isIdentity()) { 21 sk_sp<SkPDFObject> mat(SkPDFUtils::MatrixToArray(inverseTransform)); 22 form->dict()->insertObject("Matrix", std::move(mat)); 23 } 24 form->dict()->insertObject("Resources", std::move(resourceDict)); 25 form->dict()->insertObject("BBox", std::move(mediaBox)); 26 27 // Right now FormXObject is only used for saveLayer, which implies 28 // isolated blending. Do this conditionally if that changes. 29 // TODO(halcanary): Is this comment obsolete, since we use it for 30 // alpha masks? 31 auto group = sk_make_sp<SkPDFDict>("Group"); 32 group->insertName("S", "Transparency"); 33 if (colorSpace != nullptr) { 34 group->insertName("CS", colorSpace); 35 } 36 group->insertBool("I", true); // Isolated. 37 form->dict()->insertObject("Group", std::move(group)); 38 return form; 39} 40